GOM Player does not have Chromecast built-in like VLC Media Player and MX Player. Nonetheless, you can use a Chromecast device to cast GOM Player on TV. For this to work, you have to connect your Smart TV and casting device to the same WIFI network.
With GOM Player Plus, you can play EAC3 and DTS videos but it costs a one-time activation fee of $14.99. Moreover, you can sync Google Drive, WebDAV, Dropbox, or OneDrive accounts with GOM Player and watch 4K UHD videos on a big screen using Chromecast.
- Google Chromecast (or) any other Chromecast device.
- A stable WiFi network.
- Android or iOS smartphone with the GOM Player app.
- Windows or Mac with the GOM Player app.
How to Chromecast GOM Player from Android
 Install GOM player on your Android device from the Play Store.
 After installing the GOM player app, open Settings on your device.
 Go to Bluetooth & device connection settings from the menu.
 Choose Cast/Smart View/Smart Cast interaction under connection settings.
 Turn on the Cast/Smart view/Screen Cast using a toggle.
 Select your Chromecast device from the list of available devices.
 Once connected, open the GOM Player app on your Android smartphone.
 Play any video on the GOM player and you can watch the video on TV via casting.
How to Chromecast GOM Player from iPhone or iPad
Before getting into the steps, connect your iPhone or iPad to the same WIFI network as your Chromecast-connected TV.
 Install the GOM player on your iPhone or iPad from the App Store.
 After installing GOM Player, install Streamer for Chromecast TVs on your iOS device from the App Store.
 Open Streamer for Chromecast TVs and select your Chromecast device from the list.
 Click on Connect to proceed further.
 Choose Screen Mirror from the list of options.
 Click the Tap to start mirroring icon.
 Select Start Broadcast from the warning message.
 Now, open GOM player on your iPhone or iPad.
 Play any video and it will be displayed on the Chromecast-connected TV.
How to Chromecast GOM Player from Windows or Mac
 Install GOM player on your Windows PC from the Microsoft Store.
Note: If you are using Mac, search for GOM Player in the App Store and install it.
 Open Google Chrome on your PC and click the Cast option from the menu.
 Tap the sources drop-down, choose Cast desktop, and select your Chromecast.
 Minimize Google Chrome and play any video on the GOM Player.
Start watching the video on your Chromecast-connected device.
The best media players with Chromecast support are VLC, MX Player, and RealPlayer.